4 ms·
That depends on your location. I've built something similar to this tool that is discussed here and I've tested in multiple locations. For example, Vienna air
by rofo1 7y ago
That depends on your location. I've built something similar to this tool that is discussed here and I've tested in multiple locations.
For example, Vienna air was so clean (<= 10 pm10 ug/m^3), that you don't need any purifiers or anything like that.
- MartinMond 7y agoIf you think Vienna's air is clean, you didn't measure during winter and/or during an inversion. You absolutely need air purifiers.